Vaquita Expedition 2008: Preliminary results from a towed hydrophone survey of the vaquita from the vaquita express in the upper Gulf of California.
Rankin S., Swift R., Risch D., Taylor B., Rojas-Bracho L., Jaramillo-Legorreta A., Gordon J., Akamatsu T., Kimura S.
NOAA Technical Memorandum NMFS SWFSC, 2009年